Finding the Fourth Proportional to 1,867.07, 2,576.55 and 1,081.57

Step by Step Solution

1. Step 1: Write the proportion equation
   1,867.07 : 2,576.55 = 1,081.57 : x
2. Step 2: Convert to fraction form
   1,867.07/2,576.55 = 1,081.57/x
3. Step 3: Cross multiply
   1,867.07x = 2,576.55 × 1,081.57
4. Step 4: Simplify right side
   1,867.07x = 2,786,706.30
5. Step 5: Solve for x
   x = 2,786,706.30/1,867.07
6. Step 6: Final answer
   x = 1,492.56